Lifting-jack.



L. MORTIMER.

LII-TING JAQFK. Amlcmo'u men NOV. 15. 1916.

Patented Feb.. 13, 1917.

INVENTOR WITNESS ATTORN EY SAS 1 1E @Eo LEONARD MORTIMER, OF BOSTON,MASSACHUSETTS.

LIFTING-J'ACK.

Application filed November 15, 1916.

To all whom it may concern:

Be it known that I, LEONARD MORTIMER, a citizen of the United States,residing at Boston, in the county of Sufiolk and State of Massachusetts,have invented new and useful Improvements in Lifting-Jacks, of which thefollowing is a specification.

The present invention relates to improvement in the construction oflifting jacks.

In carrying out my invention it is my purpose to produce a lifting jackof a simple, cheap but thoroughly effective construction, and which isprimarily adapted for use upon automobiles or similar vehicles, andwhereby the entire front or rear of the vehicle may be elevated to adesired height, to permit repairs being made thereto, or to permit ofthe removal of the wheels.

With the above and other objects in view the improvement resides in theconstruction, combination and arrangement of parts set forth in thefollowing specification and falling within the scope of the appendedclaim.

In the drawing:

Figure 1 is a perspective view of a lifting jack constructed inaccordance with the present invention,

Fig. 2 is a transverse sectional view through the same.

As illustrated by the drawing, the improvement contemplates theemployment of a flat base 1 which is preferably constructed of wood andwhich has its edges bound by p the metal straps or plates 2. The base 1,

upon the underface thereof, is provided with spaced longitudinallyextending metal shoes 3 and the said base, upon its upper face, andadjacent what I will term the forward end thereof, is provided with avertically extending standard 4:. The standard 4: may, if desired, bealso constructed of wood and may be bound by metal reinforcingstrips,and the said standard may be secured to the base by angle ironsconnected with the base and with the opposite sides or faces of thestandard. The standard, from the upper edge thereof, is centrally formedwith a substantially V-shaped depression, and the members to theopposite sides of the said depression are provided, adjacent the topthereof, with alining openings through which pass bolts or trunnionmembers 5-5.

Specification of letters Patent.

Patented Feb. 13, 1911?.

Serial No. 131,526.

The trunnions project a suitable distance beyond the sides of thestandard and are adapted to be received in openings in longitudinallyextending arms 6-6. The arms at their outer ends are offset or otherwiseshaped to engage with the axle of the ve hicle, while to the inner endsof the said arms are pivotally secured angle links 77. The links 7 havetheir free ends pivotally connected, as at 8, to a longitudinallyextending operating lever 9, and this lever has its inner end pivotallyconnected, as at 10, between spaced ears 11-11 secured upon the innerface of the standard 3.

The lever is preferably provided witha loosely connected member in thenature of a hook 13 which may engage either with the standard or withthe base to hold the pivoted parts of the construction when the deviceis not in use.

Secured to the base 1, and arranged adjacent what I will term the outerend thereof is a vertically projecting member 14; that is provided uponone of its faces with one or more angularly disposed hook-shaped members15-15, either of the said hook members being disposed to engage with thelever when the said lever is swung at a desired inclination with respectto the standard, as when the arms are first brought beneath the axle orother portion of the vehicle and then elevated by the operation of thelever and raise the vehicle above the ground or the supporting surfacefor the vehicle.

Having thus described the invention, what I claim is:

In a lifting jack for the purpose set forth, a flat base, shoes upon theunderface of the base, a standard secured to the upper face of the baseand being bifurcated from the upper edge thereof, a trunnion upon eachof the sides of the standard, arms having offset ends pivotallyconnected with the trunnions, angular link members pivotally connectedto the inner ends of the arm, a lever pivoted to the standard andpivotally connected with the links, and an upright member upon thestandard having hooks adapted to engage with the lever to lock the leverthereto.

In testimony whereof I aflix my signature.

LEONARD MORTIMER.

Games of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington. D. G.

